04 1500 5.7 285/70/17 Just got truck back from re-gear WOW what a differance. Better fuel mileage and acceleration. Any way Now the cruise will not engage. Wondering if anyone else has or had same problem.
any help or advice would be great

 

I don't know if the G3 Rams have clock springs, I'd imagine they do but mine is shot in my Durango and I don't have a horn, Airbag, or Cruise. Maybe it's the CC Module?

 

Definitely clock spring if the air bag light comes on and the horn doesn't work. Just had to replace mine.

 

No air bag light. went from 3.55 to 4.56 i know the cruise uses wheel speed sensors. I can get the cruise light to come on sitting still. Once I hit about 20 mph it kicks itself off. I was thinking may power train module re-flash?

 

Is your speedometer acting funny?

 

Off topic to the OP but......I'm going the same route except I have 3:55's using 275x60x20 and going up to 4:56.
I have all the bits needed, I just need someone in the UK who's good with these rear ends.
Whats the gear upgrade like?
How much quicker is she?
What does the old butt dyno tell you.
To answer your original question, there is a sensor mounted on the top of the pumpkin, which the gear installers might have damaged.
Al.

 

speedo ok 5 mph due to tire size change. I figuered if the rear diff speed sensor was damaged i would have an ABS light. Huge differance. Almost went with 4.10's in stead what a mistake that would have been. It totally woke the truck up. I am going to start towing in about a month 7,000 ld travel trailer cant wait to see the differance with that to

 

Not sure about 04, but my 08 gets the cruise signal from the front left wheel. See if you have a sensor there, mine was just replaced this week.